Its strange, but i try to answer your questions, and it seems that you miss that part of a post or don't understand. I wrote a bit about ducting and how there are kits out there that don't require any cutting or case modding.
As to temps, several of us have told you that your temps are too high, borderline bad. I told you that I personally don't have alot of experience with AMD CPUs, but I told you I would research it for you. I told you what i found was that everyone recommended keeping the load temps under 50C (yours were over,52C).
You have to understand, temps affect performance, and the lifespan of your components. Your mobo, video card, RAM, and CPU are all susceptible. And while you think $100 of preventitive maintainaence now is expensive, it is nowhere near as expensive as replacing any one of those components in a couple of weeks/months when they burn up.
i think the reason alot of us recommended some of this stuff was that you mentioned over clocking, any overclocking requires more than normal cooling. I think the Thermalright is a great heat sink, IMO, the best. I mounted a 92 mm panaflo on it and it was awesome.... to be honest. That is all I would add, if you O/C, take the cover off so it gets good cool air. If you are worried about cost, don't replace the case fans, don't buy a fan controller. Buy the most important part, see what kind of affect it has, if you are happy, fine, if not....buy the next part....etc
As to buying a prefabbed system, Alot of people do that because they think they are better computers, what they don't understand is that those builder take several shortcuts. 3 very good components, one bad one.....making systems so they aren't upgradeable, etc.
As to my system, 39GHz is a pretty big O/C for a 3.2 that burns extremely hot, my problem isn't even the CPU, it is the voltage irregularity in my system, the ASUS voltage droop is a well known problem, and seriously affects performance at that level. what I am going to do is replace the ASUS with a supermodded ABIT IC7
http://www.auspcmarket.com.au/show_prod ... e=CP-BAS80